What do you learn about horses by studying the buildings and other human artifacts?

Based on evidence, an artist made a drawing of what a Botai pithouse may have looked like.

We can learn a lot by studying the size and complexity of Krasnyi Yar and the other Botai settlements. They had large,
well-planned villages with 40 to 160 houses lined up along avenues and around plazas. This tells us that the people were able to stay in one place year-round. Since they had no agriculture,
they had to count on horses. Therefore, they must have had domesticated herds.

Their belongings also tell a story. The Botai people had more pottery and heavier stone tools than you would expect for nomadic hunters.